/* ---- Tokens ------------------------------------------------------------ */
:root {
  --bg: #0d1117;
  --border: #21262d;
  --border-strong: #30363d;
  --text: #e6edf3;
  --muted: #8b949e;
  --accent: #58a6ff;
  --accent-contrast: #0d1117;

  --shell: 820px;      /* page width */
  --measure: 68ch;     /* comfortable reading width */
  --pad: 24px;
  --radius: 8px;

  color-scheme: dark;
}

/* ---- Base -------------------------------------------------------------- */
* { box-sizing: border-box; }

html {
  scroll-behavior: smooth;
  -webkit-text-size-adjust: 100%;
}

body {
  margin: 0;
  font-family: system-ui, -apple-system, BlinkMacSystemFont, "Segoe UI", sans-serif;
  background: var(--bg);
  color: var(--text);
  line-height: 1.7;
  text-rendering: optimizeLegibility;
}

a { color: var(--accent); text-decoration: none; }
a:hover { text-decoration: underline; }

:focus-visible {
  outline: 2px solid var(--accent);
  outline-offset: 3px;
  border-radius: 2px;
}

::selection { background: var(--accent); color: var(--accent-contrast); }

/* One shell width shared by the header, content and footer. */
.site-header > *,
main,
.site-footer {
  max-width: var(--shell);
  margin-inline: auto;
  padding-inline: var(--pad);
}

.skip-link {
  position: absolute;
  left: -9999px;
  padding: 10px 16px;
  background: var(--text);
  color: var(--bg);
  border-radius: var(--radius);
}
.skip-link:focus-visible { left: var(--pad); top: 12px; z-index: 10; }

/* ---- Navigation -------------------------------------------------------- */
.site-header { padding-block: 28px 8px; }

.site-nav {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  align-items: baseline;
  font-size: .95rem;
}

.site-nav .brand {
  margin-right: auto;
  font-weight: 700;
  font-size: 1.05rem;
  color: var(--text);
  letter-spacing: -.01em;
}

.site-nav [aria-current="page"] {
  color: var(--text);
  text-decoration: underline;
  text-underline-offset: 5px;
}

/* ---- Shared type ------------------------------------------------------- */
.eyebrow {
  margin: 0 0 14px;
  color: var(--muted);
  font-size: .85rem;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.lede {
  max-width: var(--measure);
  margin: 24px 0 0;
  color: var(--muted);
  font-size: 1.15rem;
  line-height: 1.8;
}

h1, h2, h3 { letter-spacing: -.03em; line-height: 1.15; text-wrap: balance; }

/* ---- Home hero --------------------------------------------------------- */
.hero { padding: clamp(48px, 12vh, 112px) 0 clamp(56px, 10vh, 96px); }
.hero h1 {
  margin: 0;
  font-size: clamp(3.25rem, 12vw, 6.5rem);
  line-height: .92;
  letter-spacing: -.055em;
}

.actions {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin: 36px 0 0;
}

.button {
  display: inline-block;
  padding: 11px 18px;
  border: 1px solid var(--border-strong);
  border-radius: var(--radius);
  color: var(--text);
  font-size: .95rem;
  transition: border-color .15s ease, background-color .15s ease;
}
.button:hover {
  border-color: var(--accent);
  background: color-mix(in srgb, var(--accent) 12%, transparent);
  text-decoration: none;
}
.button--primary {
  background: var(--text);
  border-color: var(--text);
  color: var(--bg);
  font-weight: 600;
}
.button--primary:hover { background: #fff; border-color: #fff; }

/* ---- Sections and pages ------------------------------------------------ */
.section { padding: 8px 0 56px; }
.section-title {
  margin: 0;
  padding-bottom: 16px;
  font-size: 1rem;
  color: var(--muted);
  font-weight: 600;
  letter-spacing: .06em;
  text-transform: uppercase;
}

.page { padding: 40px 0 64px; }
.page h1 { margin: 0; font-size: clamp(2.5rem, 7vw, 4rem); }
.page > p { max-width: var(--measure); color: var(--muted); }

/* ---- Post list --------------------------------------------------------- */
.post-list { list-style: none; margin: 8px 0 0; padding: 0; }
.post-list li { padding: 24px 0; border-top: 1px solid var(--border); }
.post-title { margin: 6px 0 10px; font-size: 1.5rem; }
.post-title a { color: var(--text); }
.post-blurb { max-width: var(--measure); margin: 0; color: var(--muted); }
.post-date { margin: 0; color: var(--muted); font-size: .85rem; letter-spacing: .04em; }
.more { margin-top: 32px; font-size: .95rem; }

/* ---- Post -------------------------------------------------------------- */
.post h1 { font-size: clamp(2.2rem, 6vw, 3.4rem); margin-bottom: 24px; }
.post h2 { max-width: var(--measure); margin: 56px 0 18px; font-size: 1.5rem; }
.post p, .post li { max-width: var(--measure); color: var(--muted); font-size: 1.05rem; line-height: 1.85; }
.post p { margin: 0 0 18px; }
.post .lede { color: var(--text); font-size: 1.2rem; }
.post .eyebrow a { color: inherit; }
.post blockquote {
  max-width: var(--measure);
  margin: 32px 0;
  padding-left: 20px;
  border-left: 2px solid var(--border-strong);
  font-style: italic;
}
.post code {
  padding: 2px 6px;
  border-radius: 6px;
  background: var(--border);
  font-size: .9em;
}
.post pre { max-width: var(--measure); overflow-x: auto; padding: 16px; border-radius: var(--radius); background: var(--border); }
.post pre code { padding: 0; background: none; }
.post img { max-width: 100%; height: auto; border-radius: var(--radius); }

.post-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 12px;
  margin-top: 56px;
  padding-top: 32px;
  border-top: 1px solid var(--border);
}

/* ---- Footer ------------------------------------------------------------ */
.site-footer {
  display: flex;
  flex-wrap: wrap;
  gap: 8px 20px;
  justify-content: space-between;
  margin-top: 40px;
  padding-block: 24px 40px;
  border-top: 1px solid var(--border);
  color: var(--muted);
  font-size: .9rem;
}
.site-footer p { margin: 0; }
.site-footer a + a { margin-left: 20px; }

/* ---- Responsive / motion ----------------------------------------------- */
@media (max-width: 640px) {
  :root { --pad: 20px; }
  .site-header { padding-block: 20px 4px; }
  .site-nav .brand { width: 100%; margin-right: 0; margin-bottom: 6px; }
  .hero { padding-top: 32px; }
  .actions .button { flex: 1 1 auto; text-align: center; }
}

@media (prefers-reduced-motion: reduce) {
  html { scroll-behavior: auto; }
  * { transition-duration: .01ms !important; animation-duration: .01ms !important; }
}